Malicious PDF — malware analysis report

Static analysis result for SHA-256 eec88abb10bf1274…

MALICIOUS

PDF

55.0 KB Created: 2020-08-19 20:24:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 11d97810b419d8c64a63528288330efd SHA-1: 0fd3fbe12bceae8c71d861a8e48df7a7bd4e8081 SHA-256: eec88abb10bf1274a381c7741b040b098e11697b7bd10ab2c7b85f44163f0e8a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, suggests a lure related to educational worksheets. The presence of a link farm and a critical ML flag further support malicious intent. The primary malicious IOC is the redirector URL, which likely leads to further stages of the attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=denotation%252F+connotation+exercises+worksheet+2+answer+key In PDF document text
    • http://files.bidwellwildliferehab.org/uploads/1/3/1/3/131379510/doxiko.pdfIn PDF document text
    • http://basuser.phoenixtherise.com/uploads/1/3/1/4/131453114/vitevenexasaga.pdfIn PDF document text
    • http://files.districtmultisport.com/uploads/1/3/1/4/131453256/560966.pdfIn PDF document text
    • http://files.ketoure.co/uploads/1/3/2/8/132815882/lukomoriparadodiduga.pdfIn PDF document text
    • http://goruz.charlenemosley.com/uploads/1/3/1/4/131483337/jekidejob.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8460/1758/files/irritable_bowel_syndrome_ppt_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/5237/8784/files/gmo_history.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3881/8982/files/zegazekoremagubivafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3136/1686/files/how_to_draw_a_3d_cube.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2751/1961/files/kovapuvokunaziwagoror.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2206/3515/files/gta_v_gamestop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1778/1927/files/laurel_wreath_leaf_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4859/8678/files/71175675789.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6856/9238/files/lenujogukumibofupezu.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008e4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E4F 2828 bytes
SHA-256: 4aba2bb845853324476be69e5ed1bf4ff35002942389efac2b843cac1129f0e9
font_01_sfnt_off0000984a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x984A 5348 bytes
SHA-256: 7a3eae49fe5fa35a71fdd76b96d36774e60f644b31e2ce2928da7110b4d4f11c
font_02_sfnt_off0000aa9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA9C 9816 bytes
SHA-256: 6e583a218d8d8801ce0f5b42225c3ae6c949a136349ac28e9ac3daa4382fc343

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